202202121121 has 32 divisors (see below), whose sum is σ = 271966060800. Its totient is φ = 145184071680.

The previous prime is 202202121113. The next prime is 202202121151. The reversal of 202202121121 is 121121202202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202202121121 - 2³ = 202202121113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202202121095 and 202202121104.

It is not an unprimeable number, because it can be changed into a prime (202202121151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 392065 + ... + 747073.

It is an arithmetic number, because the mean of its divisors is an integer number (8498939400).

Almost surely, 2^202202121121 is an apocalyptic number.

It is an amenable number.

202202121121 is a deficient number, since it is larger than the sum of its proper divisors (69763939679).

202202121121 is a wasteful number, since it uses less digits than its factorization.

202202121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355609.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202202121121 its reverse (121121202202), we get a palindrome (323323323323).

It can be divided in two parts, 202202 and 121121, that added together give a palindrome (323323).

The spelling of 202202121121 in words is "two hundred two billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty-one".